hi friends i have a tubal reversal (pregnancy) site what is the right way to search best keyword and get traffic form this site help me
I assume you're advertising on Adwords since this was posted in the Adwords section, so quite simply use the keyword tool provided by Google which can also be found in the tools section inside your Adwords account.
adwords.google.com/select/KeywordToolExternal follow this url. type in your niche, you'll get the most searched keywords.
You can also use Google Instant Suggest which can give you more keywords than the Google Keyword Tool. I use both. When you put in your keyword at google.com, you can see a list of similar keywords in the dropdown box suggested by Google.
Google adwords keyword tool is the best. You will have so many keywords to select from. You should know what and whom you want to target (Keyword and niche). Both are important as well.
Another tool you may find useful is GOOGLE TRENDS http://www.google.com/trends as that can also show you the popularity of your keywords over time.