For last few days my blog come to the first page for the keyword "legitimate work at home jobs". But after some day my blog rank decrease and come to the 3rd page and sometimes it also increase. I can not understand what actually happening. Please inform me. Thank you.
Its happens to me also. No need to worry about that. Keep doing link building for your site. Try to get quality relevant backlinks. I also suggest you to visit the sites that have better rank than you and optimize your site better than them and try to get good backlink as like them to your site.
Keep building backlinks, Google has the tendancy to this. The more quality backlinks you have the more likely your position will remain stable.
Its always happens. Don't worry about it. The ranking of pages always changes. Just do white-hat seo on your website. Keep updating your website with fresh contents and increase the relevant backlinks.
Like this variation happens for new sites and also now a big fight happening in SERP, all r trying to beat their competitors. Better keep doing the promotion and try to stabled n the first position