www.LinkedIn.com

A great place to share ideas

http://www.boredpanda.com/amazing-landscape-photos/

Again, inspiring

http://abstract-photography.com/

Inspiration

http://ronbigelow.com/articles/abstract-photography/abstract-photography.html

How to with abstracts

http://www.thephotoargus.com/inspiration/40-astounding-examples-of-abstract-photography/

For inspiration

http://www.thedesignwork.com/creative-macro-photography-ideas/

I love doing macro and get ideas here

http://photography.nationalgeographic.com/photography/

National Geographic has such good pics and are willing to share secrets.