Okay, time to motivate people to do some work.
I am going to pay 2 BTC for every on-line shop and 1 BTC for every organisation that you convince to start accepting Bitcoin as a payment/donation currency. They have to put an information about that on their website and
they have to be existing, established businesses/sites with a Google Page rank of at least 3. I am not going to pay you if you create your own shop overnight just for the sake of winning the BTC or if the website is totally not popular.
If anyone wants to join me in rewarding feel free - the more BTC offered the more people will hopefully move their arses.
EDIT: If you are going to have a go at some business/organisation/site let us know before you hit on them, so that we know that it is actually you who got them to accept Bitcoin. Please do so by posting here.
EDIT2: Please be reasonable and don't send silly spam to these entities; rather compose a tailored letter to each particular business. We don't want Bitcoin to be associated with spam.
EDIT3:
I thought that was obvious, but: The reward is only valid for the places that switched after this thread was created and after you declared that you were going to convince someone.Update: The pledges so far are:
Mahkul shops: 2, organisations: 1
BitterTea shops: 0, organisations: 0Blitzboom shops: 0, organisations: 0dirtyfilthy shops: 0, organisations: 0cw shops: 1, organisations: between 0.1 and 1 (depending on size)
slush shops: 3, organisations: 0 (Available BTC: 97)
mrb shops:
125, organisations: 0 (Available BTC: 375) Note: Only shops selling tangible goods and having pagerank greater from or equal 7.
Total (shops): 131BTC
Total (organisations): 1-2BTCEDIT 4: Here is the spreadsheet for this thread (note there are two sheets - one for pledges and one for takers): http://www.editgrid.com/user/mahkul/Earn_BTC_for_promoting_Bitcoin 
might be a first. I'd like to open an exchange but I'm not sure if I've got the time / money / know how. 