H&M are constantly doing one thing or the other to improve their image, often by charity. There latest two, H&M against AIDS (part 3, I think?) and Save the Oceans with WWF will probably be just as overlooked and forgotten as the last ones. Did I mention this is H&Ms third or so against AIDS campaign?
Here is what they say;

On 20th May 2010, H&M launches its third Fashion Against AIDS campaign, which includes the first festival collection, with 25% of the sales donated to youth HIV/AIDS awareness projects. ... the collection for both guys and girls will encompass the whole festival experience, from clothes and accessories through to tents and sleeping bags, all the while raising funds to promote the message of safe sex.

I don't know what's funnier, the fact that they made a white long dress for festival gear (haven't they ever thought about how muddy sleeping in a tent is?) or the fact that they want to promote safe sex during the same kind of events. Not that I don't support the cause, but maybe they should've thought it through... and maybe really try to crate awareness this time?

Save the Oceans-collection made of eco-cotton is in stores (or will be in in the next two days) and helps support Marine life, giving some of the revenue to WWF. Again, why haven't I heard more about this?
Well, for a chance to do a little good and get a new piece for the wardrobe at the same time, visit your local H&M!