I highly recommend flickr, personal choice.
1. 'More properties' link.
Many great photographers leave this 'on' so you can see a photo you like and then view the exif data. Know what aperture, focal length,shutter speed it was shot at, and learn somewhat from there.. I tink its priceless.
2. Groups.
Many outstanding photographers post here and the community is already vibrant. I join groups that uses my lens. And SG groups, so I search extensively for a particular location,theme,or subject before I go for a shoot, so I have an idea and not waste time or to get more inspiration.
3. Contacts.
Add good photographers to your contacts and then view their uploaded photos.
No need to go browse tonnes of lousy pics.
4. Favourites
I very selectively adds pics to my 'favourites' folder.
They are those that are inspiring to me. Browsing through them gives me motivation.
5. Flickr only displays ist x200 pics, can reach that limit soon unless u pay.
Those who pay are usually those more 'serious', so less of those casual home snaps uploaded, which is good.
Those who have not paid yet, like myself, is also much more selective in what is uploaded, so thats gd too.

PS: I imagine that x200 of your best photos uploaded is already actually a whole lot esp. for a noob like myself. Its almost like a challenge. For the rest, why bother uploading at all.. The more critical of yourself, the faster we learn.
But maybe when I reach x200, I may change my mind as well...lol:bsmilie: