Using One Keyword Multiple times

What is the recommended limit.

[IntegraGsrBalla]

What is the recommended number of times for using your keyword on a page.

Example: If your page and keyword is about "green widgets" what is the maximum number of times you would use that word on that page?
Would you use it in multiple links?
Title?
If using it more that 45 times do you think it would hurt your ranking?

[robotsdobetter]

It's hard to say because it depends on how many words are on that web page. Try to get a density between 5 and 20%.

[reuben101]

If you are building a site for people, it is hard to pack in more than 15% and not drive people nuts with the repetition. I personally never go above 10% and have been pleased with the results.

[webnewton]

Anything between 3-10 would be fine.