How to make google crawl the inner pages? | How to promote inner pages?

If you are new to websites and SEO, the million dollar questions is, How to make google crawl the inner pages? or How to promote inner pages, so you all find it easy to crawl or promote the home page by directory submissions. And you find it difficult crawl or promote inner pages as directory sites won't allow the inner links. There are various techniques you can follow like

1. Social Media Marketing - Post about the inner page in some Social Media Sites like Orkut, FaceBook, Twitter, LinkenIn, MySpace etc. Also try Yahoo Answers, Wiki Answers and Yahoo Groups and Google groups, since we can create post directly in a search engine's products.

2. Forum Profile Creation - There are some thousands and thousands of Forum, select the appropriate forums and register in it and create profile with the signatures with link to the inner pages.

3. Pay Per Click(PPC) - The most easiest way to make the inner pages crawled is doing PPC for the page. Just go to google adwords and select a keyword appropriate to the page that has very low Cost Per Click(CPC) and run the campaign for few days. After couple or so days open the that page and click the "Cached Snapshot of the page" button in the Page rank in the google tool bar, you can find that the google search engine has cached that page. Its true, it worked for me, belive me and just try it or you can go ahead and do the previous techniques it will definitely work but its time and effect consuming.