Know-How Exchange : Other

You can post a web link, just like you can cite a reference in an article, without first obtaining permission.

However, you might want to contact the web owner to let them know you'll be citing them. That may open up some opportunities for your business (i.e., a link from them to you, etc.).

I have not personally seen any implications surrounding this. Generally someone has information on the internet for public use, and if it's not for public use it is usually password protected.

We link to other sites frequently, in fact we get requests from others to put links on our site. This accomplishes a few things.
1. Increases traffic to the "linkee's" website or article.
2. Boosts your and the "linkee's" search engine rankings.
3. Increases your credibility with consumers because you are using 3rd party sources to support your efforts.

I'm not a lawyer but I see no legal implications associated with this. If you are worried about it you can always send a quick email or give a call to the respective website to ask for permission. During that call you can probably get them to link to you also!

Hope this helps,
Zack Pike