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I am working on adding more content to the site (content marketing, trying to attract natural links), and this includes a blog. On-site optimization will be done based on good keyword research, and after that I will be working on link building for the site. I will pull backlink data of competing best performing dating websites, google-wise, and try to get some links from there. What other link building strategies / techniques could be good for this? Thanks.

I am working on scraping title tags from websites with 1-5 million pages. Xenu's Link Sleuth seems to be the best option for this, at this point. Sitemap Generator from AuditMyPc.com seems to be working too, but it starts handing up, when a sitemap file, the tools is working on,becomes too large. So basically, the second one looks like it wont be good for websites of this size. I know that Scrapebox can scrape title tags from list of url, but this is not needed, since this comes with both of the above mentioned tools. I know about DeepCrawl.com also, but this one is paid, and it would be very expensive with this amount of pages and websites too (5 million ulrs is $1750 per month, I could get a better deal on multiple websites, but this obvioulsy does not make sense to me, it needs to be free, more or less). Seo Spider from Screaming Frog is not good for large websites. So, in general, what is the best way to work on something like this, also time efficient. Are there any other options for this? Thanks.