Off the top of my head, there are at least five basic ways to encourage people to view your photos....if anyone knows of others, please note them.
1. Put relevant tags on your photos (ex: if it's a photo of a pink rose, put in rose, flower, pink, and anything else you can think of) that describes the photo. Some people search on these tags.
2. Join other Groups that match up with your photos. (ex: if it's the same rose, join one or more flower groups and follow their rules, if any). People who enjoy looking at flowers will likely be looking at photos posted in these groups.
3. Accept invitations that you will get in comments to join Groups (see #2)
4. Geotag your photos. On the right side of your photo, under Additional Information, click "Place Photo on a Map". There, you can show where the photo was taken. If I was going to Barcelona, for example, I might want to see photos from that city, and so I'd go to that city on the Flickr map and look at said photos. When you're on a map, at the top left there's an option "Explore This Map". It will show you all other photos geotagged from places on that map.
5. Make Contacts. To do this, you invite other people to be your Contact. When I sign on, I usually look at the most recent photos from my Contacts. You can opt to see the last one, or the last five, from each. These are people I might share a common photographic or geographic interest with, and so I view their photos and perhaps they view mine as well.
