No matter how talented a shutterbug you are, a dirty lens can detract from even the most amazing shot. DIY compendium WikiHow has drawn up a step-by-step guide on removing specks and other dust particles from your camera lens with a vacuum.
As the post notes, you'll want to proceed with caution before cleaning off your lens with a vacuum (that means use more traditional methods first); the vacuum method should only be used as a last resort, since even the lowest vacuum power could harm your camera.
This trick involves getting rid of [dust particles]with a vacuum cleaner, when all else has failed and the costs of cleaning the inside of the lens are prohibitive compared to the cost of buying a new camera.
If you've run into some stubborn particles that you just can't clean with traditional methods, the six-step cleaning process involves rolling up a plastic wrap ("forming a thin sausage and leaving a section unrolled"), then wrapping it around the opening.
Browse the full post for the remaining instructions, and if you have a safer lens cleaning method, let's hear about it in the comments.