Goolge announced that Picasa Web Albums now support uploading high-definition (HD) videos, up to 720p. Whereas before you could upload, store, and share videos shot in 240 or 360p, now you can do the same for your 480p and 720p (HD) videos too.
Now your photos and HD videos can all be stored, organized and shared in one convenient place. To upload your videos make sure to use Picasa.
While YouTube lets you upload videos up to 2 GB, Picasa Web's free storage quota for all your photos and videos is 1 GB. Of course, YouTube lets you upload videos without installing an additional software.
If you don't have Picasa you can download here.