Kdjykuj

    $review = Mage::getModel('review/review')

->setEntityPkValue(intval($pressquote->product_id)) //product id

->setStatusId(intval($pressquote->status))

->setDetail($pressquote->text)

->setTitle('')

->setEntityId(1)                     

->setStatusId(intval($pressquote->status))          //approved

->setCustomerId(null)                       //null is for administrator

->setNickname($pressquote->source)

->setLink($pressquote->link)                            //custom field

->setLinktext($pressquote->linktext)                   //custom field

->setYear($pressquote->year)                            //custom field

->setStoreId(1)                                          

->setStores(array('base'))                              

->save();

I am not be able to save data on custom field above commented for custom field.

Based on comments, you want to import customers reviews from csv, so you can use this: https://www.magentocommerce.com/magento-connect/product-review-import-export.html

This extension is not ready to multistore but works fine. You can edit Adapter (MK_Reviewexport_Model_Convert_Adapter_Reviewimport) and add your custom field.

class MK_Reviewexport_Model_Convert_Adapter_Reviewimport extends Mage_Catalog_Model_Convert_Adapter_Product

{

    public function saveRow(array $data)

    {

        $write = Mage::getSingleton ( 'core/resource' )->getConnection ( 'core_write' );

        $sku = $write->query ( 'select entity_id from `catalog_product_entity` where sku = "' . $data ['Sku'] . '" ' );

        $sku = $sku->fetch ();



        if ($sku) {

            $product_id = $sku ['entity_id'];

            if ($data ['customer_id'] == '') {

                $customerid = NULL;

            } else {

                $customerid = $data ['customer_id'];

            }

            $_review = Mage::getModel ( 'review/review' )

                ->setCreatedAt ( $data ['created_at'] )

                ->setEntityPkValue ( $product_id )->setEntityId ( 1 )

                ->setStatusId ( $data ['status_id'] )

                ->setTitle ( $data ['title'] )->setDetail ( $data ['detail'] )

                ->setStoreId ( 1 )

                ->setStores ( 1 )

                ->setCustomerId ( $customerid )

                // set your custom field here.

                ->setNickname ( $data ['nickname'] )->save ();



            if ($data ['option_id']) {

                $arr_data = explode ( "@", $data ['option_id'] );



                if (! empty ( $arr_data )) {



                    foreach ( $arr_data as $each_data ) {



                        $arr_rating = explode ( ":", $each_data );



                        if ($arr_rating [1] != 0) {



                            Mage::getModel ( 'rating/rating' )

                                ->setRatingId ( $arr_rating [0] )

                                ->setReviewId ( $_review->getId () )

                                ->setCustomerId ( $customerid )

                                ->addOptionVote ( $arr_rating [1], $product_id );

                        }

                    }

                }

                $_review->aggregate ();

            }

        }

    }

}