Just uploaded an updated version of the Better YouTube Firefox extension, which is now fully Firefox 3 compatible and, you know, actually works. Download it here.

While YouTube may be a great place to answer your toddler's requests to see video of a baby panda, there is also tons of content more risqué than adorable baby animals. Video site Totlol offers the good stuff from YouTube to your kids without the rest. Designed by a British software developer and father of two, Totlol is a child-friendly frontend to YouTube, with clips fit for kids from the age of six months old to six years old. Videos range from the comically absurd such as Elmo and Grover singing the Numa Numa song, to the more serious, such as a reading of The Giving Tree by children's author Shel Silverstein.

Free video-monitoring site Feedky lets you keep an eye on all the major video-sharing sites for any keyword you're interested in popping up. Simply enter your search terms and you'll get either an RSS feed, or a simple web page, that updates when those words appear in the tags on YouTube, MetaCafe, Daily Motion, Flickr, Blip.tv, and other streaming video sites. The site's free to use without registration, but signing up gives you a bit more freedom to edit and organise the tags you're watching.

Add interactive comments to your YouTube videos with the new annotation feature. To annotate to any video you've uploaded, just head to your uploaded videos page and click the Edit annotations button. From there you can add comment boxes, speech bubbles, and even links to other content. The catch during the beta test is that annotated video only appears on videos playing directly on YouTube and not embedded on other sites, but you can get an idea of the possibilities by checking out this annotated video. YouTube isn't the first to introduce this sort of functionality, but you can bet you'll see a lot more annotated video now that they have.

You don't have to wander very far on YouTube to find concert footage, but venues and artists are getting increasingly narky about the prospect of being filmed. At a Go West/Pseudo Echo/Wa Wa Nee concert in Perth last weekend, a security guard came up to me and pointedly asked if I was planning to video the concert (I wasn't). My crime? Using an i-Mate 9502 to surf the Web -- apparently the large screen makes it a video suspect. In a more blatant crackdown, Prince recently demanded that YouTube remove all fan footage of him performing Radiohead's Creep from the site, even though the members of Radiohead (who in theory would lose songwriting royalties from such postings) actually don't give a damn.

There's not much you can do about pop star lawyers, but there's some obvious strategies you can use if you do plan to film parts of a concert and don't want a shakedown from the security goons too soon. Check the venue policy first: some places have a blanket ban (in which case there's not much point trying), with others it's dictated by the artist. Getting a seat away from the aisles makes you harder to reach. Using a smaller camera and only filming for small bursts makes it hard to distinguish what you're doing from regular photography. Anyone got any other tips for concert capture?

Mac OS X only: Fresh from the Google Mac workshop, new video application Vidnik records clips with your Mac's camera and uploads them directly to YouTube.

You can use Vidnik to create a video diary, or just to quickly record a video comment to attach to an existing YouTube video. Vidnik works with the built-in video cameras on recent Macs, with FireWire video cameras, and with many USB video cameras.

TimeTube is one of those rare YouTube mashups that make the video-sharing site both fun and functional. Type in a search term, and TimeTube lines up the results on an easily-navigated timeline, letting you trip down memory lane or learn more about a topic as it progresses through the social media jungle. There are alternate views—a list, a flipbook, and geo-located—but the timeline view is what really sells this mashup. Got another tool that stramlines and organises YouTube searches? Let's hear about it in the comments.

YouTube search webapp TimeTube creates a timeline of video clips for a certain search. Search for something (like "American Idol") and you'll get back a timeline (or "tubeline") of video clips. Pan, zoom and watch the clips right on page. Fun way to catch up on old clips of interest you haven't seen in years.

Firefox only (Windows/Mac/Linux): Firefox extension YouTube Comment Snob filters comments on YouTube videos that don't meet your snobbish standards. It does so using a combination of criteria, like a user-defined threshold of spelling errors (using Firefox's spell-checker), excessive punctuation, and excessive capitalisation. You can enable or disable any of the filter options if you don't mind capital letters, for example, and you can view any hidden comment by simply clicking Show. It's a pretty saucy little extension, but now it's hard not to want a full-on Internet Comment Snob.

Windows/Mac (Firefox and IE7): PicLens, the Firefox and Internet Explorer 7 plug-in that lets you flip through photo sets in full-screen splendour, just added YouTube support to its latest version. That means searching and parsing through YouTube videos in the same elegant interface as with photos, making it far easier to spot just the clip you're looking for, and playing the videos, full-screen or reduced size, from inside PicLens. The latest version is available for Firefox 2 and 3 Beta 5 on Windows and Mac, as well as Internet Explorer 7 on Windows, and is a free download. (Original PicLens post).