Greetings, I'm well experienced in PHP and modifications and interested to get it done. I reviewed your site. I want to know following answers before we start to understand how you want to control featured category and its listings.
=== QUESTIONS ===
1 - Do you already have categories section where you want to have a "featured product" category OR I will have to "develop" a category system?
2 - You want to display featured product as a different color in between job posting listing but at what position do you want to display? I mean, will there be only ONE featured product at a time OR you want script to pull "all featured products" and display each ONE after X job posting? an example = fetch 5 featured products and display each featured after 5 job posting.
3 - Now, when someone click "featured product" what should happen? Will it be a URL linked to an external website? OR will it also expand like a job posting?
4 - Were you referring "featured jobs" as "featured product" to distinguish between (just a confirmation)?
5 - Lastly, you said written in "fl_ads". What exactly are you referring to fl_ads here? I can see the site is based on PHP. Kindly explain it in more details.
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Also, provide me more how it works scenario of your requirements because the purpose of asking questions from me is to let you know different aspect of controlling. The more you can explain the more better and perfect work I will deliver. --- Cheers, Zeeshan