Google has my link page indexed, how long before they crawl the link?

I've had new sites show up in a day and others take weeks... sites with absolutely no backlinks and no content other than the default wordpress 'hello world' post have been indexed while other sites that I'm trying to build up take forever... google is just like that.

It's like backlinks, some show up right away and others show up months later.

Some guys are really good at fast indexing, maybe one of them will pop in with some suggestions.

Try some additional social bookmarks, digg and the rest. Create enough roads to your sites and the search spiders are going to find their way eventually.

no, after update some month ago, google craw is very fast but indexed is still low

Sometimes it just depends. When I have a new site I will social bookmark it with a few dofollow sites, maybe post it in a forum signature and get some articles submitted to the directories right away. Usually it doesn't take more than a week before they're indexed. Do you have any other links besides forum signatures? You may want to find a few more backlinks.

For what it's worth, I always make sure google finds my site first before I claim it in webmaster tools or put a sitemap on it. It was something I had read previously and have just been following. It's worked out so far, It hasn't taken more than a few days at most to index my sites.

Have you built any standard links to those sites? By standard, I mean not in forums like you described in your initial post.

When I start a new site, here's what I usually do:

1- ping it at pingomatic (yes, I ping non-blog, plain html sites)
2- build a few links from Angela's backlink packet. Not too many, and usually it's just one site that works well for me. (although I've done 3 when first starting as the most). -- Ping that backlink page using pingomatic
3- do the alexa trick (I'll explain below)

That's it. That's usually good enough for me, and sometimes I'm indexed in a few hours, sometimes 2 days.

The "alexa trick" is typing the following into your url bar and hitting enter: (obviously replace "yourdomain" with your actual domain)
You'll get a bunch of Amazon bots hitting you up for doing that (Amazon owns Alexa I think?) and they are kind of annoying, but whatever, it gets me indexed quick.

If you add too many backlinks too soon it can actually slow down indexing and ranking.

Also if you're adding multiple keyword rich anchor text links to the same page in the same sig, Google will determine that natural linking isn't done like that and may not pay as much attention to your site as you need, only one link is needed per sig, anymore than that to the same page and Google will suspect an SEO strategy is at play.

I just used blog and ping and some single sig in the forum i joined that fit to my targeted costumer and it begin to index in google.

And I also use alexa, and it is worth to try, since mine is working well.
But, yes, sometimes it takes a month or more to make it indexing in google.
That's question, I do not why, but maybe what lovelylou write above me, google suspect it as SEO strategy.