Changing published date will not benefit in search engine rankings or so. Even it should be avoided to do so frequently. Google gives a trust score to a site, manipulatio...

I would not touch publish date once the article has been crawled. I prefer to use "Last update" for the date of recent update than changing information that tec...

Yes, it improves ranking in Google if you are linked with Twitter posts. There is a concept of link popularity in SEO. It plays major role while ranking in SERPs. Link is...

When Google sees your website's strong social signals, it rates your website as a reliable resource for the search keywords your content is vying for. Twitter is a top ch...

Yes @ms, as it is the size of HTML document data and doesn't include the file size of images or videos etc.

There shouldn't be any harm by inviting general public as a guest blogger and write on SEO or related topics. There can be a guideline and after approval only the guest p...

Do you have more specific proposal? Not sure what you mean, but we can't open blog posting for general public. That would mean 99,99% of blogs being spam (either hidden o...

15MB is a LOT of data. Imagine 15 million characters X number of sites available on the Internet...

You can manually find many guest post sites. I also do that. You can use advance search operators: allinurl:writeforus your niche allinurl:guestpost your niche allintext:...

Yes. The same company can rank multiple domains for the same keyword. Companies should target dissimilar keywords for different domains in order to maintain their efforts...